TMARUS,—FILISTATA. 289 
cream-colour) markings showing a somewhat oval transverse whitish ring enclosing the hind-central pair 
of eyes and some converging lateral whitish lines; the surface of the cephalothorax has a few prominent 
dark bristles springing from small blackish spots. 
Eyes normal; the central quadrangle is broader than long, and its anterior side is shorter than the posterior. 
The interval between the hind-centrals is less than that between each and the hind-lateral eye next to it ; 
laterals seated on strong tubercles larger than the rest, the fore-lateral considerably largest. Clypeus 
obliquely prominent, its height about equal to half that of the facial space. 
Legs normal, 1, 2, 3, 4; 1 and 2 scarcely different in length, greatly longer than 3, 4, which are also nearly 
equal. They are dull yellowish in colour, mottled with white, chiefly in front of the femora of the 
first and second pairs, where they are also marked with small brown or black spots ; furnished pretty 
numerously, but not conspicuously, with hairs and spines, the spines issuing from small black spots. 
Falces moderate in length and strength, conical; colour dull yellowish, marked and mottled with white. 
Mawille, labiwm, and sternwm normal and of a whitish colour. 
Abdomen ( Q ) truncate before, widest towards the hinder part, on the upperside of which there is a considerable 
obtuse prominence directed backwards. The colour of the abdomen is dull brownish-yellow, mottled with 
white and thinly spotted with black, the latter with a tendency to form oblique transverse angular lines 
on the upperside of the prominence, where, as well as in front of it, are some longer transverse, curved 
or slightly angular yellow-brown lines ; the surface is furnished thinly with prominent slender bristles 
issuing from minute dark spots; at the hinder extremity of the abdomen, on each side above the spinners, 
is an irregular black patch or small marking. The underside is whitish, with several longitudinal parallel 
lines of small dusky blackish spots. The genital aperture is of characteristic form. 
The male resembles the female in general colours and markings, but these latter are more distinct, especially 
on the fore femora of the legs and on the cephalothorax. The abdomen is nearly cylindrical, and almost 
entirely wants the prominence on the hinder part of the upperside ; the colour is a more uniformly dull 
greyish-yellow, with white along the central longitudinal line of the upperside, where are also traces 
of some white angular transverse lines; it is also more minutely and regularly speckled with minute 
black points; the underside is white, with a broad, longitudinal, suffused blackish central band, and a 
line of blackish spots or points on each side, The palpi are short; the radial and cubital joints very 
short, furnished with some strong bristles, the former roundish or nodose, the latter broad and spreading 
in front, with a long, tapering, somewhat sinuously curved, pointed apophysis, of a deep blackish red- 
brown colour, double the length of the joint, at its fore extremity on the outer side, and closely adhering 
to the outer margin of the digital joint ; beneath this, on the same side, is a much shorter one, tapering, 
curved, and with a strongly bent, truncated or somewhat bifid point, on the outer side of which are a few 
coarse black hairs; opposite to this last apophysis is an obtuse prominent corneous point, near which are 
numerous strong black bristles. Digital joint rather large, broad-oval, its anterior extremity ending in 
a somewhat sharp, short, corneous point. Palpal organs prominent, highly developed, consisting of a 
strong black corneous process, with a prominent rather corkscrew-shaped one in the middle. 
Hab. Costa Rica (Sarq). 
FILISTATA, Latreille. 
Filistata capillosa, sp. n. 
Adult female, length nearly 7 lines. 
General form and structure normal. 
Cephalothorax inversely heart-shaped, no lateral marginal impression at the caput, dark brown, clothed with 
grey pubescence and with a tapering black-brown band from and including the eyes to the thoracic 
junction. The oblique indentations denoting the junction of the caput and thorax are indicated by a 
diffused yellow-brown line or stripe. 
Eyes in a semicircle, its convexity directed forwards ; ocular area considerably broader than long ; posterior 
row straight, the two middle eyes wide apart, each very near but not quite contiguous to the lateral eye 
on its side. Central pair no more than half a diameter apart, and at a nearly equal distance from the 
fore-lateral eyes, and each is less than that from the hind-central eye nearest to it. The fore-laterals are 
BIOL. CENTR.-AMER., Arachn. Aran., February 1899. 2PP 
